What is expand (ka+a+kb)/(k(k+1)) ?

The solution to expand (ka+a+kb)/(k(k+1)) is (ak+a+bk)/(k^2+k)

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expand (ka+a+kb)/(k(k+1))

expand

\frac{ka + a + kb}{k ( k + 1 )}

\frac{ak + a + bk}{k ^{2} + k}

Solution steps

\frac{ka + a + kb}{k ( k + 1 )}

Expand

k (k + 1) : k^{2} + k

= \frac{ak + a + bk}{k ^{2} + k}

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cos (5 (t - \frac{π}{6})) U (t - \frac{π}{6})

What is expand (ka+a+kb)/(k(k+1)) ?
The solution to expand (ka+a+kb)/(k(k+1)) is (ak+a+bk)/(k^2+k)